Fluid-measuring device



A. B. WOOD.

FLUID MEASURING DEVICE.

APPLlcATIoN FILED sPT.2e. 191.1.

1,339.909. Patented May 11, 1920.

2 SHEETS-SHEET l.

ATTORNEYS.

the water is ldiverted through-a second by UNITEnsTATEs PATENT oFEIcE.

ALBERI BALDWIN Woon, or NEWonLEANs, LOUISIANA, -AssIGNoR OEoNE-'IHIRD rro CHARLES ARTHUR BROWN, OF LGR-AIN, OHIO, AND vONIEl-TI-II'RJ) TO GEO. EARL.

0F NEW ORLEANS, LOUISIANA.

-rLUID-MEASUEING DEVICE.

'26, 1917. seriai No. 193,266.

B. woop', a

New Orleans, in the parish of Orleans and State of Louisiana, vhave invented certain new and. useful Improvements in Fluid- Measuring Devices; and I do hereby declare the following to be'a full, clear, and exact description of the invention, such' as will enable others skilled in 'the art to which it4 appertains to make and use the same.

. AMy invention relates in general to means for'ineasuring a quantity of fluid flowing in a Watermain, being more particularly adapted to measure the flow -of watervor similar fluids in city-or similar water mains andfit is a division of my co-p`ending app'licatiomSerial Number. 100,845, filed May 31st, 1916.

I am aware that in such art prior to the improvements set forth herein, means-have been p rovided for passing the normal flow of water through the main into a by- )ass wl'iere it traverses a meter, and where t ere is an extraordinary flow a portion 'only of devices the main conduit has been normally closed by a valve, which opens during extraordinary flows 1n the main, and in doing so, controls the by-pass through the positive meterto close said by-pass and opens the pass through the proportional meter.

My invention relates more particularly to such devices, and I aim to provide means to more accurately register the amount of water flowing through the by-passes when the valves controlling such by-passes and the main conduit are being opened and closed. In.A accomplishing the above obJect, I also Aprovide means which will not catch trash flowingthrough theconduit and thereby cause congestion in the same.

Theseand other objects of the inventionv and the inventionitself, I believe, will be understood from .a description of an embodiment of the invention.`

' Figure 1 isa horizontal sectional view of apparatus showing an embodiment ofmy invention; Fig. 2 is a vertical sectional view.

of the apparatusshown in Fig! 1.; Fig. 3 is 4a' partial vertical section 'upon another line tion ofthe apparatus shown -i'n the drawings.

' Referring now to the. drawings and-tothe embodiment of the invention illustrated v Specification ofLetter-s' Patent. Patnited'lay 11, 1920, Original application filed May 3 1, 1916,' Serial Not/100,845. Divided and thisv application filedl September therein, at 7 is shown a portion of a conduit or duct, 'such -for example,- as 'is employed to conduct water from a reservoir or other source to a city or'othei' object. The water flows from the source, not shown, intothe section 7 at the endS. and out at the end: 9, as= indicated by the arrows. The

section 7 may be of any suitable shape7 but I have preferred to form it as shown, where there are two chambers 10 and 11, the chamber 10 being connectedto the end 8 and the chamber 1l to the end 9'of 7f, The'chamber 10 in the embodiment shown is preferably made wider at the central portion 12, 'in' j guish it from the other valves which I 'will mention. Thevalve 15 fitsn a seat 16 which'is preferably .formed in the conduit between the chambers 10 and 11. I have here shownwhatiis termed a spherical valve, which consists of a hemispherical portion 17 connected to .a base 18 by suitable means,

such as a threaded stud 19 which fits in a centralopening correspondingly 'threaded in the part 17. The diameter of the body vportion of v18is preferably made of the ltending'radially fromytheperiphery of the base 18 to engage the edge ef the valve seat 16 when the valve is fseated. With this'ar rangementthe water begins to flow'unimf peded directly past' the valve as soon as it.,

45 laws, will permit a free iiow of fluid. Howeifected by a flange employed to engage thev edges of the'valve members.

seat, the lugs 20, of course,'being so small that any retardation or eddying efect caused thereby would be inappreciable. The importance of this will appear in the further description.

A stem 21 is connected to the valve base 18 and a pin 22 is pivotally connected there to by some suitable connecting means,'such as a bolt 23. The pin is connected in a socket in one end 4of a link 24 which is connected at the other end to one of the elements 25 of a valve. In the form shown the element 25 consists of a hollow cylinder which is adapted to be. rotated about a second hollow oylinder'26 whose interior is di- Vided`into two cells or chambers by a web v 2T, the two cylinders.constituting a Corliss."

The cylinder,` 26 is convalve mechanism. nected'to the conduit in any suitable'manner to remain stationary during the operation of the device. One of the cells 30 of the valve element 26 is provided with an opening 3l, here shown asof the shape of an isosceles triangle, for the purpose of vregulatiiig-thel main valve when the same is being openedv and closed. The othercell 32 in the valve elementv 2G is provided with av plurality of slot openings 33 which are adapted. to cooperate with a plurality of slot openings 31 in the valve element 25. The sides of these openings converge y toward the adjacent In the form shown this convergence is discontinued as the opening approaches the edge of its element, whereupon the opening is conducted upon a substantially straight line, as shown I at 35, to the edge:

When in normal position, the openings 33 and 3et together torni l enturi tubes, which, according to well-known hydraulic ever, when the valveelements are even slightly displaced with respect to each other the Venturi tube effect will be destroyed and the resistance to the iow will be so` great as to practically instantaneously stop the flow of fluid through the valve. The

valve element 25 is provided with an openvalve is seated. The cell 30 is connectedhto lthe cell 13 by means of a by-pass 50 in which ing136'to coperate with the opening 31.'

adjusting the relative position ofthe openings in the auxiliary valve when lthe main there is connected a proportionalor-tally main valve is moved the by-pass 52- will be meter 5l and the cells 32 and 13 are connected by a bypass 52 iii which there is. connected a direct or positive meter The operation ot the device is as follows:

llllien the main valve is in closed position, suchA as shown in Figs. 2 and 3, water cannot l liow past the main valve 15, but is diverted 'is measured by the positive or direct meter? Should, however, the demand increase, the pressure in the chamber 1l will become so much less than the pressure in the chamber 10, due to this demand', that this pressure will act upon the main valve causing the same to begin to open and moving it away from the-seat 16. Immediately the effectively closed, owing even to a slight movement of the element 26 with respect to the element 25 and to the destruction of the small venturis formed by the cooperating openings in said elements. A still further movement of the main valve will entirely close these openings. By these means it will be seen that waterv cannot beowing through both meters at the same time.

Immediately the main valveis lmoved from the seat, the water flows directly past o the same, as has been explained. The eX tent of the opening of the main valve will, of course, depend upon the demand. As the main valve opens, the iow therethrough will be in proportion to the xflow through an isosceles triangle. This can be understood by reference to Figs. 5 and 6. The main valve has been shown diagrammatically in a slightly open position in Fig. 5. `As the main valve opens and the by-pass 52 is closed, the by-pass 50 is opened through the isosceles triangle opening 31, the apex of -whichwill first overlapthe opening 3G andpermit water to flow therethrough. As the main Valve opens, the opening 31 will be moved farther along, increasing the opening inthe by-pass 50, thereby maintaining a tlow through. the by-pass 50 which will be absolutely proportional to the flow past the main valve. 'Perhaps these relations'can be better explained by referring to Figs. v5 and`6.V l .K

Let A be the area of the opening between the edge of the seat 16and the main valve.

ins

Then A will equal mi2-1:52, which .is equal Ito U2- 62), where r'is the radius of the liemispherical portion 17 of the valve and I) is the radius of the portion within the seat, as indicated in Fig. 5. Now by the right triangle rbm, r2*b2 equals m2, where m is the vdistance between 16 and the front face of 18. Substituting, A equals ir (m2), whereby we fixnd that the .area of the opening of the main valve is proportional to the square of the displacement of the main valve from the closed position. Referring now to Fig.

(l, Where a is the altitude of the opening 3l and' 0 is the base, and consideringan open- ,ing made by a displacement m', which is equivalent to a displacement m ofthe .main valve, the area A of theopening ivill be -.1mcZ, Where l(l is thev base ofthe opening.

Noiv

is equal to froni'ivhich l equals ow substituting, A" will be equal to u 1 i if, 2 l

In otherivords, the areaiof the opening in the auxiliary valve inthe by-pass '50 is piroportional to the square ofA the movement, so-

that the opening in the main vvalve and the opening in the by-pass 50 will be propor- .tional throughout the movementl of the' valve and the proportional'meter 5l Will give a true and accurate indication of the water liowing past the main valve. The rounded or hemispherical shape of the valvev cally instantaneousl)v closing it When' the main valve has closed, and the means con-` trolling the by-pass through 'the proportionalv meter 4should open and close such by-pass in true or substantially true proportion to the opening and closing of the main valve. i

of my invention and the ldetails thereof for i -the vpurpose of illustrating and describing the same.

I do not Wisli'tobe limited to such details or such embodiment, as many departures may-be made therefrom Without departing from the spirit of the invention.

I claim: Y

l/In fluid metering apparatus, the combination of a main conduit, a spherical-sec- .tion-shaped main valve controlling the flow 'means to conduct fluidthrough said meter 7 I do not Wish to be limited to'v I have shown this particular embodiment of fluid-through said conduit, a by-pass about said main valve, an vauxiliary valve in said, by-'pass controlled bythe main; valve and having a triangular-shaped 'opening andra meter in sa'idby-pass. f 70 2.. In fluid metering apparatus, the combination of a conduit, a spherical-sectionshaped main valve controlling the flow of luid through the conduit,l a meter andA in proportion to the flow past the main Avalve and cont-rolled by said main valve.

3. In fluid metering apparatus, theccinbination of -a conduit, 'a spherical-sectionl,shaped ni'aiii valve .controlling saidconduit, 80 a meter, means to conduct fluid to the meter,

and a Corliss valve controlling saidmeans governed by said main valve.`v

4.5111 fluid metering apparatus, the com` biiiation ofa conduit, a spherical-section- "sliapedmain .valve controlling the conduit,

a by-pass ofsaidf'main valve, a meter rin said by-pass and a Corliss valvecontrolling said by-pa'ss governed by the main valve.

In fluid metering apparatus, the coinbination of a main conduit, a main valve seat in said conduit, a substantially spherical-section-shaped main valve Whose radius is no greater than the radius of the seat,'a meter `and vmeans governedfby 'the main valve controlling the supply of fluid to the meter in proportion to 'the How past the main valve.

(3.- In fli'iidmeteringapparatus, the combination of a .c 'niduit, a main valve seat 100 in the conduit, a rounded main'valve whose diameter is no greater thanthe diameter of the seat,.a meter and means for supply- .ing lndto the meter controlled by the main valve. A, l 105 TQIn fluid meteringapparatus,the combination of a cond-uit, a circular main valve seat in the conduit, a spherical-sectionshaped main valve whose radius is the saine as. the radius of the valve seat, a plurality .of lugs extending radially from the valvel to engage the seat when 'the valve is in, posivtion, a meter and means controlling the supply of fluid to the Ameter ygoverned by the main valve. o o 1,115 S. In fluid metering apparatus, the com-l 1 .bination of amain conduit, a valve seat in the main conduit, a spherical-sectionshaped main valve normally in said seat' controllingA the floiv 4of Water through the 12|O- conduit, a pair of by-passes about saidmain valve, a direct reading meter 1n one bypass and a proportional meter in the other,

a pair of auxiliary valves governed by the l, .mani valve, each controlling one of' said 125 by-passes, the valve in the .direct meter by-pass being open when the main valve is closed, `the valve in the proportional meter by=pass being closed when the main valve is `closed, said valve in the direct meter by-pass stopping the flow of water therethrough immediately the main .valve is movedfrom its seat, said valve inthe proportional meter yby-pass being opened in true proportion to'the opening of the main valve asvsaid main valve is opened' 9. In 'fluid metering apparatus, the combination of a fluid conduit, amain valve controlling the c onduit, a b v-pass about the main valve, a direct or positive meter in said by-pass, an auxiliary valve in the bypass controlled by the main valve and which 'l stops the iiow of water through the by-pass immediately upon the` maui valve being moved from its seat,.a second by-pass labout the main valve, a proportional meter in said second by-pass and a second auxiliary valve in the second by-pass which is opened by the main4 valve in true proportion'to the opening of the' main valve as the main valve' opens. -A f 10. In fiuid metering apparatus, the combination of' a `fluid conduit, a main valve in the conduit which 'is spherical-section-A shaped, a pair of bypasses about the main valve, a meter in each b v-pass, a pair of auxiliary valves one in each ot the by-passes controlled bythe main valve, one of said auxiliary valves consisting ot` a pair of movable elements having openings therein,

which when brought into co-incidence form a Venturi tube, said Yeuturi tube being destroyed when one of said elements is slightly displaced with respect to the other and the second ofy said valves consisting of a pair of elements one'of which includes a triangular slt and the other of which conopenings, which when brought together- ,form a Venturi tube when the main valve is closed, said cylindersY being displaced with respect to normal position when the main valve is slightly displaced from its seat, ef-

fectively closing the -auxiliary valve, a seeond by-pass, a proportional 'meter in the second by-pass, a second. auxiliary valve in the second by-pass and consisting of a pair of concentric cylinders, one of. said `cylinders provided with a slot and the second of said cylinders provided with a triangul lar opening whose base is parallel or substantially parallel tothe common axis of' the cylinders, said second auxiliary valve Abeing closed when the main valve is 1n normal position and being moved by the main valve to bring the triangular opening in the one cylinder in co-inciden'ce With the slot in the other cylinder as themain valve opens.

12. bination of a fluid conduit, a main valve controlling the conduit, and including ,a movable element which when moved opens an area proportional to the square of the movement of said valve from normal, a bypass about the main valve, a meter in said by-pass, an auxiliary valve in the by-pass and including a 'movable element which when moved opens an area proportional tol the square of the movement of said valve Ifrom normal, and means toconnect said valves so that they move together.

13. In fluid metering appa atus, the combination of a fluid conduit,l a main valve 11i the conduit and including a movable member which when moved opens an area functional to the distance of its movement from`normal, a pair of lay-passes about the main valve, a valve in one of said by-passes including a moslable member which when moved opens an area functional to the distance ot itsmovement from normal, a second valve in the other b'y-pas's consisting of two elements each having an opening therein which are adapted to be brought together to form a Venturi tube, said Venturi tube beingr destroyed when 'one of said elements is slightly displaced with respect to the other, and 'means to connect the three valves together whereby they are moved together.

In testimony vhereof, I have hereunto signed myname.

ALBERT BALDWIN Woon.

In fluid metering apparatus, the com-v 

